Telegraph-key.



J. N. BELL.

TELEGRAPH KEY.

APPLICATION FILED 00T. 2o, 1913.

Preeeeted Feb.9,1915.

2 SHEETS-SHEET l.

@weimar/wao b/LC #QUAL/Q J. N. BELL.

TBLEGRAPH KEY. APPLICATION FeLED 00T.20.1913.

Patented Feb. 9, 1915.

2 SHEETS-SHEET 2.

@XN/lineman JOHN N. BELL, 0F ONEIDA, NEW YORK. y

f TELE GRAPH-KEY.

1,112.7,855if j To all 'whom t may concern:

Be it known that I, JOHN N. BELL, a citizen of the United States of America, residing at Oneida, in the county of Madison and State of New York, have invented certain new and useful Improvements in Telegraph-Keys, of which the following is a specification.

This invention relates to telegraph keys and more especially, to that form of telegraph key whereby a predetermined number of dots may be transmitted by one stroke of the key.

The objectsv of my invention are to provide a key of this character so constructed as to be operated in the mannery and with the same motions as now employed with the standard type of telegraph key; to provide a key of simple and cheap construction and accurate in its operation.

With these, and such other objects in View, as may hereinafter more fully appear, my invention consists of the novel arrangements and` construction of parts described in the following specification and set forth in the claims, and which are shown in the accompanying drawings, wherein Figure l isa plan view of the device. Fig. 2 is a side elevation. Fig. 3 is a vertical sectional view taken on the line A--A, Fig. 1. Fig. 4 is a vertical sectional view taken on the line B--B Fig. 1. Fig. 5 is a detail view, partly in section, of the key levers and their support. Fig. 6 is a diagrammatic view of the circuit connections.

Referring to said drawings by numeral, a base 1, ofa usual and ordinary type, has mounted thereon by means of a bolt 2 the support 3. Pivotally mounted between the upstanding arms of support 3, are the dash lever'4 which is in electrical contact with said support, and the dot lever 5, which is insulated from said support, preferablythrough a sleeve 6 of insulating material. The upward movement of levers 4 and 5 is restrainedby a yoke 7 fastened to the end 'of the base in any suitable manner and overlying said levers. f

Pivotall mounted in a bridge or support 8,'wh1ch is suitably fastened'to the base 1, is a lever arm 9 adapted to be contacted by the end of dot lever 5. Lever 9 is held in normal position by any suitable means,

lbut preferably, by the coiled spring 10,

mounted in a suitable support 11 carried by the base 1, and adapted to contactl with Specication of Letters Patent.

Application led October 20, 1913. f Serial No. 796,204.

Patented Feb. 9, 1915.

one end of said lever. Resiliently mounted upon one end of lever 9, through the spring 12, is a vibrating bar 13. Bar 13 has slidably mounted thereon a weight 14 adjustably `held in place by a screw 15. IIhe position of said weight tendin to regulate the vibratory motion of said ar 13. Bar 13 normally rests against the end of an adjust- 'i ing screw 16 mounted in a threaded openvided near the ends thereof, the adjusting screws 22, the ends of which contact with lthe ends of lever arm 9, and thereby limit' the upward movements of said lever arm.

The operative ends of dash-lever 4 and dot lever 5 have mounted thereon the usual key 23, said key being divided vertically through the center thereof to permit of motion of said levers. Dash lever 4 is further provided with an adjustable contact screw 24 adapted to engage a terminal 25 mounted on the base 1. The usual retracting spring 26 is also provided for said dash lever 4. The base 1 is also provided with the usual terminal posts 27 and 28 and the switch 29.

The device is operated with the usual up and down stroke of the key 23, the half of the key attached to lever 4 being depressed when it is desired to send a dash, and the i half attached to lever 5 being depressed when sending dots. Thisgives the usual and ordinary position and motion heretofore assumed by an operator thereby doing away with the necessity for learning'a new' movement, and allowing a perfect arm rest position so as to relieve all strain.

' Having described my invention, what I claim as new and desire to secure by LettersPatent, is :f-

1. A telegraph transmitter including a base having two main line terminals, a vertically swinging lever supported from the base and carrying a resilient dot contact spring, a lever, a fixed dash contacteerried by the lever, a second lever adapted to Aoperate saidv dot contact "mechanism and 'said meansrcomprising-separate levers hav- 1 avv diametrically divided circular y knob mg at thelr outer ends, handles, each handle mounted on the operative ends `of said 1eormmg substantially half an ordinary ciry 10 operating said dot and dash lever, H. C. Bremer..

vers. v cular key, substantially as described. V5 2.k A telegraph transmitter including a InV testimony whereof I hereunto aix my 15 base supportingthe vline terminals, a horisignature in presence of twofvwitnesses YzontallyV pivoted dot lever carrying a vre-` JOHN N. BELL.

silient contact spring having a vertical Witnesses: f movement, a dash lever and meansvfor FRANK R. VSmnn'r, 

